CN212927906U - Energy-absorbing pressure-relief rock burst-resistant anchor rod - Google Patents
Energy-absorbing pressure-relief rock burst-resistant anchor rod Download PDFInfo
- Publication number
- CN212927906U CN212927906U CN202021964551.7U CN202021964551U CN212927906U CN 212927906 U CN212927906 U CN 212927906U CN 202021964551 U CN202021964551 U CN 202021964551U CN 212927906 U CN212927906 U CN 212927906U
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- rolling
- energy
- tray
- rock burst
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- 239000011435 rock Substances 0.000 title claims abstract description 44
- 238000005096 rolling process Methods 0.000 claims abstract description 87
- 238000013016 damping Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 description 15
- 230000035939 shock Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to an energy-absorbing pressure-relief type anti-rock burst stock belongs to engineering support technical field. The anchor rod comprises a rod body and a tray, wherein the rod body comprises an end head, a rolling component and a front end rod body which are sequentially connected, and the tray is fixedly arranged on the front end rod body. The utility model discloses an energy-absorbing pressure-relief type anti-rock burst stock utilizes roll release and tray, mounting isotructure energy-absorbing release to strut between the rolling member when taking place the rock burst and be loaded, and it is stable to restrain the rock burst and destroy, maintain the country rock to avoid casualties and equipment to damage.
Description
Technical Field
The utility model relates to an energy-absorbing pressure-relief type anti-rock burst stock belongs to engineering support technical field.
Background
As a geological disaster common in underground engineering excavation or exploitation at home and abroad, when rock burst occurs, elastic energy stored in surrounding rocks is suddenly released and converted into a large amount of kinetic energy, the personal safety of engineering operators is seriously threatened, the construction progress and quality are influenced, and even earthquake can be induced sometimes. In order to ensure the safe and smooth construction of the engineering, the working face and the surrounding rock need to be effectively supported by energy absorption and yielding. The anchor bolt support is the most common support means at the present stage, and an energy-absorbing pressure-relief type rock burst-resistant anchor bolt is urgently needed for further improving the anchor bolt support capability.
SUMMERY OF THE UTILITY MODEL
Be difficult to adapt to the problem that the country rock warp greatly to current stock energy-absorbing ability, the utility model provides an energy-absorbing pressure-relief type anti rock burst stock, the utility model discloses utilize self stronger discharge capacity and energy-absorbing ability to carry out the high strength to the country rock and strut to the underground works country rock such as tunnel, tunnel is maintained stably in the realization.
The utility model discloses a solve its technical problem and the technical scheme who adopts is:
the utility model provides an energy-absorbing pressure-relief type rock burst resistant stock, includes the body of rod 1, tray 5, and body of rod 1 is including the end 2, the rolling component 3 and the front end body of rod 4 that connect in proper order, and tray 5 is fixed to be set up on the front end body of rod 4.
A central through hole I is formed in the center of the tray 5, and the front end rod body 4 penetrates through the central through hole I of the tray 5 and is fixedly connected with the tray 5.
The energy-absorbing pressure-relief rock burst-resistant anchor rod further comprises a fixing piece 6, a central through hole II is formed in the center of the fixing piece 6, the front end rod body 4 penetrates through the central through hole II of the fixing piece 6 and is fixedly connected with the fixing piece 6, and two ends of the fixing piece 6 are connected with two ends of the tray 5 through a connecting piece I7 and a connecting piece II 8 respectively.
Further, mounting 6 includes the U type body, cuboid I and cuboid II, and cuboid I and cuboid II slope respectively and set up at the opening both ends of the U type body, and U type body, cuboid I and II integrated into one piece of cuboid form a kind of bell jar type structure, and U type body, cuboid I and II integrated into one piece of cuboid are inside all to be provided with cavity and inside cavity intercommunication.
Furthermore, the two ends of the connecting piece I7 are respectively and fixedly arranged at the ends of the rectangular cavity I and the tray 5, and the two ends of the connecting piece II 8 are respectively and fixedly arranged at the ends of the rectangular cavity II and the tray 5.
Furthermore, the inner cavity of the fixing piece 6 is filled with a damping and energy-absorbing piece, the tray 5 is of a hollow cavity structure, and the hollow cavity of the tray 5 is also filled with a damping and energy-absorbing piece.
The rolling component 3 comprises a rolling connector, a rolling piece I9 and a rolling piece II 10, rotating shafts are fixedly arranged at two ends of the rolling piece I9 and two ends of the rolling piece II 10, the rolling connector is of a hollow cavity structure, the rolling piece I9 and the rolling piece II 10 are arranged in the hollow cavity of the rolling connector in a parallel rotating mode through the rotating shafts, and the rolling piece I9 and the rolling piece II 10 are perpendicular to the rod body 1.
Furthermore, the inside wall of the rolling connector is provided with a rotating groove matched with the rotating shaft, and the end of the rotating shaft is arranged in the rotating groove and can rotate in the rotating groove.
Furthermore, the rolling member I9 and the rolling member II 10 are cylindrical rolling members, and rolling surfaces of the rolling member I9 and the rolling member II 10 are attached and can rotate in an externally tangent mode.
The rolling surfaces of the rolling element I9 and the rolling element II 10 are smooth surfaces, so that the bearing capacity is high, and the friction coefficient is small;
the body 1 of the anchoring rod is made of high-strength deformed steel.
The shock absorption and energy absorption piece can be made of shock absorption rubber, foam energy absorption materials or honeycomb energy absorption materials.
The working principle of the energy-absorbing pressure-relief rock burst-resistant anchor rod is as follows:
when rock burst occurs in underground engineering, kinetic energy released by surrounding rock is applied to the anchor rod and acts on the rolling piece I9 and the rolling piece II 10 of the rolling member 3, and the rolling piece I9 and the rolling piece II 10 are stressed to rotate in an externally-tangent veneering manner, so that the pressure relief effect is achieved; secondly, a damping and energy-absorbing piece is arranged in the tray to absorb impact; when the rock burst impacts violently, the connecting piece I and the connecting piece II which connect the tray and the fixing piece are broken to release pressure, and the damping and energy-absorbing piece is arranged in the fixing piece to play a role in assisting energy absorption.
The utility model has the advantages that:
(1) the energy-absorbing pressure-relief type rock burst-resistant anchor rod of the utility model is provided with the rolling component, and the rolling part I9 and the rolling part II 10 are stressed to rotate in an externally tangent veneering manner when loaded, thereby achieving the effects of energy absorption and pressure relief;
(2) the connecting piece I and the connecting piece II of the energy-absorbing pressure-relief type rock burst-resistant anchor rod can be broken to relieve pressure;
(3) the energy-absorbing pressure-relief type rock burst-resistant anchor rod of the utility model realizes multiple pressure relief, shock absorption and energy absorption by arranging multiple layers of energy-absorbing parts, namely the rolling component, the tray, the connecting piece and the fixing piece, thereby greatly improving the energy-absorbing pressure-relief capacity of the anchor rod;
(4) the utility model discloses an energy-absorbing pressure-relief type anti-rock burst stock simple structure, simple to operate, respond well.
Drawings
FIG. 1 is a schematic structural view of an energy-absorbing and pressure-relieving rock burst-resistant anchor rod;
FIG. 2 is a schematic perspective view of an energy-absorbing and pressure-relieving rock burst-resistant anchor rod;
FIG. 3 is a schematic view of a rod structure;
FIG. 4 is a schematic view of the fastener and tray connection;
FIG. 5 is a schematic view of a rolling member;
FIG. 6 is a schematic view of the combination of a rolling member I and a rolling member II;
in the figure: 1-rod body, 2-end, 3-rolling member, 4-front-end rod body, 5-tray, 6-fixing piece, 7-connecting piece I, 8-connecting piece II, 9-rolling piece I and 10-rolling piece II.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Example 1: as shown in fig. 1 to 4, an energy-absorbing pressure-relief rock burst-resistant anchor rod comprises a rod body 1 and a tray 5, wherein the rod body 1 comprises an end 2, a rolling member 3 and a front-end rod body 4 which are sequentially connected, and the tray 5 is fixedly arranged on the front-end rod body 4;
a central through hole I is formed in the center of the tray 5, and the front-end rod body 4 penetrates through the central through hole I of the tray 5 and is fixedly connected with the tray 5;
the energy-absorbing pressure-relief type rock burst-resistant anchor rod further comprises a fixing piece 6, a central through hole II is formed in the center of the fixing piece 6, the front-end rod body 4 penetrates through the central through hole II of the fixing piece 6 and is fixedly connected with the fixing piece 6, and two ends of the fixing piece 6 are connected with two end heads of the tray 5 through a connecting piece I7 and a connecting piece II 8 respectively;
the fixing piece 6 comprises a U-shaped body, a rectangular body I and a rectangular body II, wherein the rectangular body I and the rectangular body II are obliquely arranged at two ends of an opening of the U-shaped body respectively;
two ends of the connecting piece I7 are fixedly arranged at the ends of the rectangular cavity I and the tray 5 respectively, and two ends of the connecting piece II 8 are fixedly arranged at the ends of the rectangular cavity II and the tray 5 respectively;
the inner cavity of the fixing piece 6 is filled with a damping and energy-absorbing piece, the tray 5 is of a hollow cavity structure, and the hollow cavity of the tray 5 is also filled with a damping and energy-absorbing piece;
when the anchor rod is used in an engineering, anchor rod hole sites are arranged, a drilling machine is used for constructing holes, the hole depth is larger than the proper length of the anchor rod, the anchor rod is reasonably paved around a working surface to realize the protection of the whole working surface, concrete is sprayed outside the anchor rod to form a lining, and a protective net is arranged on the outermost layer according to the condition;
when the underground engineering is subjected to rock burst, kinetic energy released by surrounding rocks is applied to the anchor rod and acts on the rolling member, and the rolling member rotates under stress to achieve the pressure relief effect; and secondly, a shock absorption and energy absorption piece is arranged in the tray to absorb impact, when rock burst impacts violently, a connecting piece for connecting the tray and the fixing piece is broken to release pressure, and the shock absorption and energy absorption piece is arranged in the fixing piece to play a role in assisting energy absorption.
Example 2: the energy-absorbing pressure-relief type rock-burst-resistant anchor rod is basically consistent with the structure of the energy-absorbing pressure-relief type rock-burst-resistant anchor rod in embodiment 1, and the difference lies in that: as shown in fig. 5 and 6, the rolling member 3 includes a rolling connector, a rolling element i 9 and a rolling element ii 10, two ends of the rolling element i 9 and two ends of the rolling element ii 10 are both fixedly provided with a rotating shaft, the rolling connector is a hollow cavity structure, the rolling element i 9 and the rolling element ii 10 are parallelly and rotatably arranged in the hollow cavity of the rolling connector through the rotating shaft, and the rolling element i 9 and the rolling element ii 10 are perpendicular to the rod body 1;
the inner side wall of the rolling connecting body is provided with a rotating groove matched with the rotating shaft, and the end head of the rotating shaft is arranged in the rotating groove and can rotate in the rotating groove;
the rolling surfaces of the rolling piece I9 and the rolling piece II 10 are attached and can rotate in an externally tangent mode;
the rolling surfaces of the rolling element I9 and the rolling element II 10 are smooth surfaces, so that the bearing capacity is high, and the friction coefficient is small;
when rock burst occurs in underground engineering, kinetic energy released by surrounding rocks is applied to the anchor rod and acts on the rolling piece I9 and the rolling piece II 10 of the rolling member 3, and the rolling piece I9 and the rolling piece II 10 are stressed to rotate in an externally-tangent veneering manner, so that the pressure relief effect is achieved.
While the present invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides an energy-absorbing pressure-relief type rock burst resistant stock which characterized in that: including the body of rod (1), tray (5), end (2), rolling member (3) and the front end body of rod (4) that body of rod (1) is connected including the order, and tray (5) are fixed to be set up on the front end body of rod (4).
2. The energy-absorbing pressure-relief type rock burst-resistant anchor rod as claimed in claim 1, wherein: a central through hole I is formed in the center of the tray (5), and the front end rod body (4) penetrates through the central through hole I of the tray (5) and is fixedly connected with the tray (5).
3. The energy-absorbing pressure-relief type rock burst-resistant anchor rod according to claim 1 or 2, characterized in that: the tray is characterized by further comprising a fixing part (6), a central through hole II is formed in the center of the fixing part (6), the front end rod body (4) penetrates through the central through hole II of the fixing part (6) and is fixedly connected with the fixing part (6), and two ends of the fixing part (6) are connected with two ends of the tray (5) through a connecting piece I (7) and a connecting piece II (8) respectively.
4. The energy-absorbing pressure-relief rock burst-resistant anchor rod as claimed in claim 3, wherein: mounting (6) including the U type body, cuboid I and cuboid II slope respectively and set up the opening both ends at the U type body, and the U type body, cuboid I and II integrated into one piece of cuboid form a kind of bell jar type structure, and the U type body, cuboid I and II integrated into one piece inside all are provided with cavity and inside cavity intercommunication of cuboid.
5. The energy-absorbing pressure-relief type rock burst-resistant anchor rod according to claim 4, wherein: the both ends of connecting piece I (7) are fixed respectively and are set up the end at rectangle cavity I and tray (5), and the both ends of connecting piece II (8) are fixed respectively and are set up the end at rectangle cavity II and tray (5).
6. The energy-absorbing pressure-relief type rock burst-resistant anchor rod according to claim 4, wherein: the inner cavity of the fixing piece (6) is filled with a damping and energy-absorbing piece, the tray (5) is of a hollow cavity structure, and the hollow cavity of the tray (5) is also filled with a damping and energy-absorbing piece.
7. The energy-absorbing pressure-relief type rock burst-resistant anchor rod as claimed in claim 1, wherein: the rolling member (3) comprises a rolling connector, a rolling part I (9) and a rolling part II (10), rotating shafts are fixedly arranged at two ends of the rolling part I (9) and the rolling part II (10), the rolling connector is of a hollow cavity structure, the rolling part I (9) and the rolling part II (10) are arranged in a hollow cavity of the rolling connector in a parallel rotating mode through the rotating shafts, and the rolling part I (9) and the rolling part II (10) are perpendicular to the rod body (1).
8. The energy-absorbing pressure-relief type rock burst-resistant anchor rod as claimed in claim 7, wherein: the inside wall of the rolling connector is provided with a rotating groove matched with the rotating shaft, and the end of the rotating shaft is arranged in the rotating groove and can rotate in the rotating groove.
9. The energy-absorbing pressure-relief type rock burst-resistant anchor rod as claimed in claim 7, wherein: the rolling member I (9) and the rolling member II (10) are cylindrical rolling members, and rolling surfaces of the rolling member I (9) and the rolling member II (10) are attached and can rotate in an externally tangent mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021964551.7U CN212927906U (en) | 2020-09-10 | 2020-09-10 | Energy-absorbing pressure-relief rock burst-resistant anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021964551.7U CN212927906U (en) | 2020-09-10 | 2020-09-10 | Energy-absorbing pressure-relief rock burst-resistant anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212927906U true CN212927906U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021964551.7U Expired - Fee Related CN212927906U (en) | 2020-09-10 | 2020-09-10 | Energy-absorbing pressure-relief rock burst-resistant anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212927906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352331A (en) * | 2021-11-16 | 2022-04-15 | 重庆大学 | Anti-integrated energy-absorbing impact-resistant anchor rod and impact resistance method thereof |
-
2020
- 2020-09-10 CN CN202021964551.7U patent/CN212927906U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352331A (en) * | 2021-11-16 | 2022-04-15 | 重庆大学 | Anti-integrated energy-absorbing impact-resistant anchor rod and impact resistance method thereof |
| CN114352331B (en) * | 2021-11-16 | 2024-02-09 | 重庆大学 | Anti-integrated energy-absorbing impact-resistant anchor rod and impact-resistant method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210409 |